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Gyroceratites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Agoniatitida
Suborder:
Anarcestina
Superfamily:
Anarcestaceae
Family:
Mimoceratidae
Subfamily:
Mimoceratinae
Formal Genus Name and Reference:
Gyroceratites MEYER, 1831
Type Species:
G. gracilis BRONN, 1835
Images
(Click to enlarge in a new window)
Fig. 13A; 14. *G. gracilis, M.Dev., Ger.; enlarged (73)
Synonyms
Aphyllites, Mimoceras
Geographic Distribution
Eu.-Fr.N.Afr.-SE.Austral.
Age Range
Beginning Stage in Treatise Usage:
L.Dev.
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
M.Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
No prominent sculpture; whorls in contact
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Agoniatitida
Suborder:
Anarcestina
Superfamily:
Anarcestaceae
Family:
Mimoceratidae
Subfamily:
Mimoceratinae
Formal Genus Name and Reference:
Gyroceratites MEYER, 1831
Type Species:
G. gracilis BRONN, 1835
Images
(Click to enlarge in a new window)
Fig. 13A; 14. *G. gracilis, M.Dev., Ger.; enlarged (73)
Synonyms
Aphyllites, Mimoceras
Geographic Distribution
Eu.-Fr.N.Afr.-SE.Austral.
Age Range
Beginning Stage in Treatise Usage:
L.Dev.
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
M.Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
No prominent sculpture; whorls in contact